11112221122002 has 576 divisors, whose sum is σ = 33134473008000. Its totient is φ = 2645668085760.

The previous prime is 11112221121943. The next prime is 11112221122027. The reversal of 11112221122002 is 20022112221111.

11112221122002 is a `hidden beast` number, since 111 + 122 + 211 + 220 + 0 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 17951891649 + ... + 17951892267.

It is an arithmetic number, because the mean of its divisors is an integer number (57525126750).

Almost surely, 2^{11112221122002} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11112221122002, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16567236504000).

11112221122002 is an abundant number, since it is smaller than the sum of its proper divisors (22022251885998).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11112221122002 is a wasteful number, since it uses less digits than its factorization.

11112221122002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1431 (or 1421 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 11112221122002 its reverse (20022112221111), we get a palindrome (31134333343113).

The spelling of 11112221122002 in words is "eleven trillion, one hundred twelve billion, two hundred twenty-one million, one hundred twenty-two thousand, two".